Onopordum bracteatum subsp. bracteatum

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 247

(a) Subsp. bracteatum :

Stem white-lanate, becoming brownish, glabrescent and sparsely glandular below; wings up to 8 mm wide, with a spine up to 10 mm. Leaves white, lanate; lobes with apical spine up to 12 mm. Involucral bracts 5-8 mm wide, with apical spine up to 10 mm. Karpathos. (Anatolia.)